japanese and u.s. negotiators have struggled over how to relocate an american military base in okinawa. ldp government leaders agreed in 2006 to keep the futenma air station in okinawa. the first dpj prime minister promised in 2009 to move it outside of the prefecture. hatoyama later decided the base should be relocated within the prefecture. the critics say the flip-flop weakened relation with the u.s. and they say the leaders of neighboring countries saw an opportunity to take advantage. >> translator: the dpj ripped apart the japan/u.s. relationship. these problems are a result of their failures in diplomacy over three years. >> reporter: and now japanese face another threat from north korea. on wednesday officials there launched what they called a rocket to put a satellite into space. but political leaders in tokyo, seoul and washington say what they were doing was testing technology for long range ballistic missile. tension, uncertainty, opportunity. just some of the reasons why u.s. leaders are m